CURRENT_DIR := $(shell pwd)

BIN_DIR	:= $(CURRENT_DIR)/bin
SRC_DIR := $(CURRENT_DIR)/src
OBJ_DIR := $(CURRENT_DIR)/build

EXE := $(BIN_DIR)/fit
SRC := $(wildcard $(SRC_DIR)/*.cpp)
OBJ := $(patsubst $(SRC_DIR)/%.cpp, $(OBJ_DIR)/%.o, $(SRC))

CPPFLAGS := -Iinclude -MMD -MP
#CFLAGS   := -Wsuggest-override -g -Wall -Wextra
#CFLAGS   := -g -Wall -Wextra `root-config --cflags`
CFLAGS   := -g -Wall -Wextra -Wno-unused-variable -Wno-unused-parameter -Wno-unused-function `root-config --cflags`
LDFLAGS  := -Llib `root-config --glibs`
LDLIBS   := -lm

.PHONY: all clean

all: $(EXE)

$(EXE): $(OBJ) | $(BIN_DIR)
#	$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $@
	$(CXX) -std=c++11 $(LDFLAGS) $^ $(LDLIBS) -o $@

$(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp | $(OBJ_DIR)
#	$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
#	$(CC) $(CPPFLAGS) $(CFLAGS) -shared -fPIC $< -o $@
	$(CXX) -std=c++11 $(CPPFLAGS) $(CFLAGS) -shared -fPIC $< -o $@
	
$(BIN_DIR) $(OBJ_DIR):
	mkdir -p $@

clean:
	@$(RM) -rv $(BIN_DIR) $(OBJ_DIR)

-include $(OBJ:.o=.d)

# The -MMD and -MP flags together generate Makefiles for us. These files will have .d instead of .o as the output
# must include the .d makefiles. The "-" at the front suppresses the errors of missing Makefiles.
# 	Initially, all the .d files will be missing, and we don't want those errors to show up.